Well pumping apparatus



p 1931- G. LKENISTON 1,823,273

W131i: PUMPING APPARATUS Filed Nov. 4, 1930 2 Sheets-Sheet l I INVEN TOR. @ffififf. KEN/570w ATTORNEYS.

Sept. 15, 1931. G. KENISTON WELLPUMPING APPARATUS 2 Sheets-Sheet 2 Filed Nov. 4, 1930 w Z M25 7 IIIII/IIIIIflI/IIIIII 'IA Patented Sept. 15, 1931 GECRGE I. KENISTON, OF TAFT, CALIFORNIA WELL PUMPING APPARATUS Application filed November 4, 1930. Serial No. 493,437.

low producing well, all while maintaining an engine speed sufliciently high for the engine to develop power efficiently, to the end that the power required for pumping will be conserved, and the wear on moving 15 parts of the apparatus reduced to a minimum so that a low producing well can be v profitably Worked.

It is a further purpose of my invention to provide a mechanism of the above described character specifically embodying chain and sprocket speed reduction means preferably applied to the jack post and operatively connecting the band wheel shaft and the crank ,for actuating the walking beam such mann-er that the rotational speed of the crank will be sufficiently reduced for thewalking beam to operate thepump slowly while the normal operating speed of the engine is maintained. I will describe only one form of well pumping apparatus embodying my invention, and will then point out the novel features thereofin claims.

In the accompanying drawings:

Figure 1 is a view showing in side eleva- 35 'tion a conventional well pumping apparatus with one form of mechanism embodying my invention applied thereto.

Figure 2 is an enlarged view of the driving mechanism in side elevation. Figure 3 is a view of the mechanism in end elevation.

Figure 4 is a vertical sectional view taken on the line 4- 1: of Figure 3 and looking in the direction of the arrows. I

Figure 5 is a horizontal U sectional view taken on the line 5-5 of igure 2.

Referring specifically to the drawings in which similar reference characters designate similar parts in each ofthe several views, -my invent-ion in its present embodiment is shown associated with a standard form of well rig having a derrick 10 supported on a floor 11. A walking beam 12 is pivotally mounted on a Samson post 13 and is connected to sucket rods 14 working in the well 55 tubing 15. The walking beam 12 is oscillated to reciprocate the sucker rods by means of a band wheel shaft 16 which is usually journaled on jack posts 17 and operatively connected by a crank 18 and pitman 19 to the walking beam. The band wheel 20 which is fixed to the shaft 16, is driven by an engine 21 through the medium of a belt 22 trained about the band wheel.

In the present instance the mechanism embodying my invention is interposed between the band wheel shaft 16 and the crank 18, and comprises a bracket A of substantially L shape having a horizontal portion 23 seating on the top of the jack post and a vertical portion 24 recessed into a vertical side of the jack post. lVebs 25 rigidly connect the portions 23 and 24 and are also recessed into opposite sides of the jack post so as to be flush therewith. 75

The portion 23 of the bracket A is provided with a bearing B in which is journaled the band wheel shaft 16. The bearing B is constructed of lower and upper sections 26 and 27, the section 26 being formed in-' tegral with the bracket, and the section 27 providing the upper half or cap secured to the lower section by threaded studs 28 and nuts 29 thereon.

A second bearing B is provided on the jack post and is supported on the vertical portion 24: of the bracket A parallel to the bearing B; A countershaft 30 is journaled in the bear ing B by means of anti-friction roller units 31 seating in pockets in the bearing B and retained against displacement by rings 32 secured to the hearing by screws 33.

The countershaft 30 projects from opposite ends of the bearin B and has fixed thereto the crank 18 provic ed with the usual wrist pin 34 working in a slot 35 of the pitma-n 19. Fixed to the band wheel shaft 16 which constitutes a drive shaft, is a sprocket wheel 36; and fixed to the countershaft 30 is a second sprocket wheel 37 larger than the wheel 36. 3M

' formed in the bracket.

A chain 38 is trained about the sprocket wheels 36 and 37 so that when the band Wheel shaft is rotated by the engine, the countershaft and hence the crank 18 will be driven at a reduced speed and thus reciprocate the sucker rods to actuate the pump at a rela tively slow speed while. the engine is operat ing at a relatively high and efli'cient speed as is necessary in order to obtain the required amount of power.

In'the present instance the bearing 13'' is slidably mounted on the vertical portion 24 of the bracket A for adjustment towards and away from the bearing 13., byv the. provision of rectangular and alined projections 39 on the bearing slidably fitting into: a slot 40 The bearing B" is provided with: slots 41 receiving tie members in the forinof bolts 42' having nuts 43, the bolts extending through registering openings in'the vertical portion 24 of the bracket and jack postsothat when the nuts are tightened they co act with the-bolts to perform the dual function of securing the bearing B in a selected position of adjustment relative to the bearing B and to secure the bracket A to the jack post. 1

'lhe adj ustability of the bearing B enables slack in the chain 38 to be removed and sufficient tension placed upon the chain for the latter to operate at maximum efficiency; and to permit of such adjustment of the bearing 13 with the utmostease and dispatch, a feed screw 44 is .journaled at one end in a sleeve 45 formed on the bracket A, and at its other and reduced end 46in a second sleeve 47 also formed on the bracket in alinement with the first sleeve, The feed screw extends freely through an opening in the bearing B and is threaded through a nut 48 secured to: the

bearing B by screws l9 so that by applying a wrench: or other toolf to an an'gul arrhead' 50 on the feed screw, and rotating the latter in one direction when the nuts 43 0fthe bolts 42' are loosened, the bearing B can bereadily bolts 51 extending at their uppercnds through lugs 5'2 on thelower end of the bracket A and provided ther-eat with nuts'53, are secured by other nuts 54 to a tie plate 55:- extending beneath the mud sill 56 on. whichthe jack post rests. The tie-bolts 51' co-act with a; third tie bolt 51' also extending through a lug 58 on' ,the bracket, and connected to the latter, bearing section 27, and to the tie plate 55 by nut-s 59 and 60' respectively, to fixedly secure the jack post to the mud sill or foundation, as well as: secure the bracket on the jackpost as will be understood; In. addition the ack post is braced by brace rods 61. i

l Vith th e mechanism embodying my invention applied torthe pumping apparatus as above described, it will be manifest that when the engine is in operation, the rotational speed of the crank 18 will be sufliciently re duced relative to the rotational speed of the band Wheel shaft 16, to enable the engine to be operated at a relatively high speed commensuratewith maximum eficiency, while actuating the pump at. a relatively slow speed which may be as little as a few strokes per minute. Thus in pumping wells from which oil is available in small quantities capable of being elevated asa result of a relatively slow pumping speed, the conservation of power as well as a reduction in the, wear of the working parts of the pumping'apparatus will be effected by the use of my invention. 7

Although I have herein shown and described only one form of well pumping apparatus embodying my invention, it is to be understood that various changes and modifications maybe made therein without departing from the spirit of the invention and the spirit and scope of the appended claims.

I claim: 7

1'. In wel-lpumping apparatus, a jack post, a substantially Lv shaped bracket having one portion provided with a bearing and overlyingthe top of the jack post and another portion overlying a vertical side of the jack post, a drive shaftjournaled in the bearing, a second bearing on the second portion of the bracket, a countershaft journal'ed in the second bearing, a driving connection between the shafts, means for slidably mounting the second' bearing on the second portion of'the bracket parallel to the first bearing for adjustment relative to the latter to compensate for variations in the driving connection, and means for securing the second bearing in a selected position of adjustment.

2;. In well pumping apparatus, a jack post, a substantially L shaped; bracket having one portion-provided with a bearing and overlying the top of the jack post and. another portion overlying a vertical side of the jack post, a cl-rive shaft j ournaled in the bearing, a second bearing on the second portion of the bracket, a countershaft journaled in the second'bearing, a driving connection between the shafts, means for slidably mounting the second bearing on the second portion of the bracket parallel toqthe first bearing for adjustment relative to the latter to compensate for variations in the driving connection, and tie members extending through the second bearing, second portion of the bracket and jack'post, for securing the bracket to the latter andtthe second bearing in aselected position of adjustment on the bracket.

3.. In welli pumping apparatus, a jack post, a substantially"L shaped bracket secured to the jack post and having one portion overlying the top of the latter and another portion overlying a vertical side of the jack post,

a bearing on the first portion of the; bracket,

a band wheel shaft j ournaled in the bearing, a second bearing, co acting means on the second portion of the bracket and the second bearing for mounting the latter on the bracket for adjustment relative to the first bearing, a countershaft to which a crank is adapted to he fixed, journaled in the second bearing parallel to the first shaft, a sprocket wheel fixed to the first shaft, a second sprocket wheel larger than the first sprocket wheel, fixed to the countershaft, a chain trained about the sprocket wheels, andmeans for securing the second bearing in any selected position of adjustment.

4;. In well pumping apparatus, a ack post, a substantially L shaped bracket secured to the jack post and having one portion overlying the top of the latter andanother portion overlying a vertical side of the jack post, a bearingon the first portion of the bracket,

' a band Wheel shaft journ aled in the bearing,

a second bearing, co-acting means-on the second portion of the bracket'and the second bearing for mounting the latter on the bracket'for adjustment relative to the first bearing, a countershaft to whi h a crank is adapted to be fixed, journaled in the second bearing parallel to the first shaft, a sprocket wheel fixed t0 the first shaft, a second sprocket wheel larger than the first sprocket Wheel, fixed to the countershaft, a chain trained about the sprocket wheels, and tie bolts extending through the second bearing, second portion of the bracket and jack post, for securing the bracket to the jack post and the second bearing in a selected position of adjustment.

5. In well pumping apparatus, a jack post, a substantially l. shaped bracket secured to the jack post and having one portion overlying the top of the latter and another portion overlying a vertical side of the jack post, a bearing on the first portion of the bracket, a band wheel shaft ournaled in the bearing, a second bearing, co-acting means on the second portion of the bracket and the second bearing for slidably mounting the letter on the bracket for adjustment relative to the first bearing, a countershaft to which a crank is adapted to be fixed, j ournaled in the second bearing parallel to the first shaft, a sprocket wheel fixed to the first shaft, a second sprocket wheel larger than the first sprocket wheel fixed to the countershaft, a chain trained about the sprocket wheels, a feed'screw journaled in the bracket, a nut secured to the second bearing co-acting with the feed screw to adjust the second bearing in response to rotation of the feed screw, and means for securingthe second bearing in any selected position of adjustment.

6. In well pumping apparatus, a jack post, a substantially L shaped bracket secured to the jackpost and having one portion overlying the top of the latter and another portion overlying a vertical side of the jack post, a bearing on the first portion of the bracket, a band wheel shaft journaled in the bearing, a second bearing, co-acting means on the second portion of the bracket and the second bearing for slidably mounting the latter on the bracket for adjustment relative to the first bearing, a countershaft to which a crank is adapted to be fixed, journaled in the second bearing parallel to the first shaft, a sprocket wheel fixed to the first shaft, a second sprocket wheel larger than the first sprocket wheel fixed to the countershaft, a chain trained about the sprocket wheels, a feed screw j ournaled in the bracket, a nut secured to the second bearing co-acting with the feed screw to adjust the second bearing in response to rotation of the feed screw, and tie bolts extendin through the second bearing, second portion of the bracket and jack post, for securing the bracket to the jack post and the second bearing in selected position of adjustment.

7. In well pumping apparatus, a jack post, a substantially L-shaped bracket having one portion provided with a bearing and overlying the top of the jack post and another portion overlying a vertical side of the jack post, webs overlying other vertical sides of the jack post and rigidly connecting said portions of the bracket, a shaft ournaled in the bearing, a second bearing on the second portion of the bracket, a shaft journaled in the second bearing, and a driving connection between the shafts.

GEORGE I. KENISTON. 

